Home / 12,385.48-18,579.84-6,542.32

Finding the Fourth Proportional to 12,385.48, 18,579.84 and 6,542.32

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Solution

The fourth proportional to 12,385.48, 18,579.84 and 6,542.32 is: 9,814.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.48 : 18,579.84 = 6,542.32 : x
  2. Step 2: Convert to fraction form
    12,385.48/18,579.84 = 6,542.32/x
  3. Step 3: Cross multiply
    12,385.48x = 18,579.84 × 6,542.32
  4. Step 4: Simplify right side
    12,385.48x = 121,555,258.83
  5. Step 5: Solve for x
    x = 121,555,258.83/12,385.48
  6. Step 6: Final answer
    x = 9,814.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.